Granted Patent
Utility
US 5,958,542 · App. 08/656,911
Thin film magnetic disc and method of manufacturing the disc
Inventors:
Mitsuyoshi Ootake, Yuichi Kokaku, Yoshinori Honda, Akira Kato, Hiroaki Hagimae, Heigo Ishihara, Kenji Furusawa
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Jun 3, 1996
Inventors
Mitsuyoshi Ootake
Yuichi Kokaku
Yoshinori Honda
Akira Kato
Hiroaki Hagimae
Heigo Ishihara
Kenji Furusawa
Assignee (at issue)
HITACHI, LTD.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.